* {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}

#box {
	width: 500px;
	height: 400px;
	border: 1px solid #E0E0E0;
	background: #F9F9F9;
	overflow: hidden;
	margin: 50px auto;
	position: relative;
}

#box_content {
	width: 480px;
	height: auto;
	padding: 8px;
	position: absolute;
	top: 0;
	left: 0;
}

#box_scroll {
	width: 18px;
	height: 400px;
	float: right;
	border: 1px solid #A0A0A0;
	background: #C0C0C0;
	position: relative;
}

#box_scroll>#box_scroll_bar {
	width: 16px;
	height: 64px;
	position: absolute;
	border: 1px solid #999;
	background: #666;
	border-radius: 4px;
	cursor: pointer;
	position: absolute;
	top: 0;
	left: 0;
}